Koyorad Hyper Radiator Caps are intended for use with Koyorad Aluminum Performance Radiators. Made in Japan, this genuine Koyorad radiator cap offers excellenct sealing qualities when installed on a CNC-machined filler neck of a Koyorad radiator. Designed...

Royal Purple Ice(company link) is a high performance, synthetic, radiator coolant additive for both gasoline and diesel engines. It is formulated to reduce the surface tension of the coolant, which improves heat transfer through the cooling system while ...